View.AsSingleton (Google Cloud Dataflow SDK 1.9.1 API)

Google Cloud Dataflow SDK for Java, version 1.9.1

Class View.AsSingleton<T>

    • Method Detail

      • hasDefaultValue

        public boolean hasDefaultValue()
        Returns whether this transform has a default value.
      • defaultValue

        public T defaultValue()
        Returns the default value of this transform, or null if there isn't one.
      • withDefaultValue

        public View.AsSingleton<T> withDefaultValue(T defaultValue)
        Default value to return for windows with no value in them.
      • validate

        public void validate(PCollection<T> input)
        Description copied from class: PTransform
        Called before invoking apply (which may be intercepted by the runner) to verify this transform is fully specified and applicable to the specified input.

        By default, does nothing.

        validate in class PTransform<PCollection<T>,PCollectionView<T>>